No, it's not just you! TestFlight is currently down for some users, including yours truly. While Apple took a bit of time to acknowledge the issue, the System Status page has now been updated to reflect the issue.
Update: the issue has now been resolved!
According to Apple, the issue started at 8.35 AM Pacific Time and is currently ongoing. The company notes that "Users are experiencing a problem with this service. We are investigating and will update the status as more information becomes available."
If you're having problems downloading apps or installing updates from the App Store, you're not alone. I am not able to download apps or install updates, and another colleague has verified the same. Also, if you check Apple's system status page, you'll see where the iTunes Store is experiencing issues.
This issue appears to be affecting iTunes Store, App Store, and Mac App Store purchases and updates. Best advice? Just be patient until Apple gets things resolved.
Roughly two weeks after suffering a noticeable outage, several iCloud-related services are currently unavailable for some users, although Apple's System Status page hasn't been updated yet to reflect the issue.
Update: all services seem to be back online.
If you're having issues with some, or all, of your iCloud services you're not alone. It appears that several of Apple's iCloud services are down for a number of users. We've seen numerous complaints of it on Twitter, and Apple has updated its System Status page to reflect the outages.
A few of us here at iDB are experiencing iCloud issues—I specifically am receiving pop up warnings on both my Mac and iPhone saying that my iCloud password is incorrect for various applications. Others have reported that they are unable to access iCloud.com, or iCloud backups.
If you've noticed that Instagram isn't working properly this afternoon, it's not just you. Several users have taken to Twitter to complain that the popular image-sharing service is down, and a few of us here at iDB have confirmed the outage.
While parts of the app are still working for some folks, it seems that the Explore tab isn't loading for most users, and many are having issues getting their personal feeds to load. We're also seeing '503 Service Unavailable' in the News tab.
There are multiple reports on Twitter and elsewhere indicating that the App Store, iTunes and iBooks services are either down or functioning erratically. The downtime appears to be affecting users in the United States, Sweden and possibly other regions. On top of that, the App Store appears to be loading incorrectly for some users as well. Hit the break for the latest updates…